CAJ | 학술논문

目的使用锥形束CT比较上颌单次快速扩弓前方牵引和上颌反复快速扩缩前方牵引的矫治效果,以期为临床提供参考.方法选择24例上颌后缩患者,使用随机化区组设计的方法分为对照组和反复扩缩组,每组12例.对照组上颌单次快速扩弓后行面罩前方牵引;反复扩缩组上颌反复快速扩缩后行面罩前方牵引.对每组治疗前后的锥形束CT影像进行三维重建、定点、重叠和测量分析.结果反复扩缩组1例患者在治疗中失访.治疗后反复扩缩组上颌骨前移量[(2.5±1.0)mm]显著大于对照组[(1.6±0.8)mm](P＜0.05);反复扩缩组颅底点至上齿槽座点(Ba-A)的距离增加了(3.1±1.0) mm,显著大于对照组[(2.2±0.9)mm](P＜0.05);反复扩缩组上颌双侧第一磨牙前移量显著大于对照组(P＜0.05).结论与上颌单次快速扩弓相比,上颌反复快速扩缩前方牵引早期治疗上颌后缩患者可能对上颌骨前移略有利.
목적 사용추형속CT비교상합단차쾌속확궁전방견인화상합반복쾌속확축전방견인적교치효과,이기위림상제공삼고.방법 선택24례상합후축환자,사용수궤화구조설계적방법분위대조조화반복확축조,매조12례.대조조상합단차쾌속확궁후행면조전방견인;반복확축조상합반복쾌속확축후행면조전방견인.대매조치료전후적추형속CT영상진행삼유중건、정점、중첩화측량분석.결과 반복확축조1례환자재치료중실방.치료후반복확축조상합골전이량[(2.5±1.0)mm]현저대우대조조[(1.6±0.8)mm](P＜0.05);반복확축조로저점지상치조좌점(Ba-A)적거리증가료(3.1±1.0) mm,현저대우대조조[(2.2±0.9)mm](P＜0.05);반복확축조상합쌍측제일마아전이량현저대우대조조(P＜0.05).결론 여상합단차쾌속확궁상비,상합반복쾌속확축전방견인조기치료상합후축환자가능대상합골전이략유리.
Objective To investigate the effects of maxillary protraction combined with repetitive rapid palatal expansions and constrictions(RPE/C) vs.rapid palatal expansion(RPE) alone using cone-beam computed tomography(CBCT).Methods Twenty four subjects with maxillary retrusion were recruited and block randomized into either the control group(n=12) or the RPE/C(n=12) group.Control group:facemask protraction after RPE.RPE/C group:facemask protraction after RPE/C.3D reconstruction,landmarks identifying,superimposition and cephalometric analysis were performed to compare the pre-treatment and post-treatment CBCT images.Results One subject in the RPE/C group was lost to follow up during the treatment.Maxilla moved forward[(2.5 ± 1.0) mm] after maxillary protraction with RPE/C,which was significantly greater than that in the control group[(1.6±0.8) mm](P＜0.05).The distance of basion to subspinale (Ba-A) increased[(3.1 ± 1.0) mm] in the RPE/C group,which was significantly greater than that in the control group[(2.2 ± 0.9) mm] (P＜0.05).The amount of forward movement of upper first molars was significantly greater in the RPE/C group(P＜0.05).Conclusions Maxillary protraction with RPE/C might positively affect the forward movement of maxilla compared with the RPE alone protocol with the early treatment of maxillary retrusion patients.